Machine for pressing soles upon shoe bottoms



.5. J. FINN Nov. 10, 1942.

MACHINE FOR PRESSING SOLES UPON SHOE BOT'i'oMs Filed July 25. 1940 v e Sheets-Sheet 1 NOV. 10, 5 F|NN 2,301,205 MACHINE FOR PRESSING SOLES UFO SHOE BOTTOMS Filed July 25, 1940 s Sheets-Sheet 2 I 1 I I l vEA/TUR; 1g.

3/0 I i M Nov. 10, 1942. 5. J. FINN 230L205 MACHINE FOR PRESSING SOLES UPON SHOE BOTTOMS Filed July 25, 1940 e Sheets-Sheet :s

run! I I j i w VEN TUR Nov. 10,- 1942. 'm 2,301,205

mcnmn FOR PRESSING SOLES won snos BOTTOMS Filed July 25, 1940 s Sheets-Sheet-4 Nov. 10, 1942. s, FM 2,301,205

MACHINE FOR P RESSING SOLES UPON SHOE BOTTQMS Filed July 25, 1940 6 Sheets-Sheet 5 Fig.7

Nov. 10, 1942. 5. J. FINN MACHINE FOR PRESSING SOLES UPON SHOE BOTTOMS s Sheets-Sheet 6 Filed July 25, 1940 Patented Nov. 10, 1942 UNITED STATES PATENT ()FFICE} MACHINE Foa PRESSING SOLES UPON SHOE BOTTOMS Sidney J. Finn,, Beverly,=Mass., assignor to United Shoe Machinery Corporation, Borough of Flemington,-N. J., a corporation of New Jersey Application July 25, 1940, SerialNo. 347,502

36 Claims.

This invention relates to machines for pressing soles upon shoe bottoms and is adapted for operations such as sole laying and cement sole at taching.

Objects of the invention are to provide adequate and uniform pressure in the operationof pressing soles upon shoes and to provide an improved means for applying this pressure.

The illustrated machine comprises an inflatable pad which may be completely collapsed and upon which a shoe and sole are pressed with considerable pressure and thereafter the pad is inflated to cause the pressure to be increased and more uniformly distributed over the shoe bottom. The inflatable pad in this machine, like other pads in common use in pressure-applying machines of this type, is susceptible to damage by certain pressure mediums which, however, because of inherent advantages, are used in the fluid pressure system. For example, many ofthese machines are equipped with rubber pads and with oil pressure systems, but because oil is deleterious to rubber it has not heretofore been possible to utilize the oil pressure to inflate thepadsJ This difiiculty is overcome, in accordance with one feature of this invention, by the illustrated padinflating means which comprises a system connected with the inflatable pad and containing a pressure medium that is not deleterious to the pad, a second pressure fluid system associated with the first system, and means responsive to the pressure in the second system for forcing the non-deleterious pressure medium from the first system into the pad. Thus, with this arrangement in a machine equippedwith rubber pads for example, water can be used in the system which is connected to the pads and oil or any other desired medium in the other system. Theillustrated means for transmitting pressure'from one 40' system to the other consists of a pair of connected pistons which are spaced from each other so that the leakage around either piston can be isolated and disposed of. separately,'the isolation of the leakage being facilitated by the arrangement of a partition between the pistons. The water system, that is, the water cylinder, the water pad and the pipe leading to it, is kept constantly full of water by connecting it with a reservoir higher than the highest point in the system.

A further feature of this invention relates to the mechanism for pressing a shoe into the pad and to the control exercised by this mechanism over the pad-inflating means. As illustrated, the preliminary pressure of the shoe against the pad is produced by the action of a cam which i operated by fluid pressure. When, by reason of the resistance of the shoe, movement of the cam ceases, its fluid-pressure-operated mechanism acts automatically to open a valve to causeinflation of the pad.

It is desirable that the shoes remain under pressure for a predetermined time and accords ingly a timing device which is setin operation when the pressure is applied is provided, this mechanismacting to release the pressure after a predetermined timehas elapsed. V

In the illustrated machine, oil supplied by a gear'pump is utilized at two pressures, the higher pressure being used to apply preliminary, pressure to the shoe and the lower pressure to operate the piston which causes water to be forced into the pad.

In the drawings, H Fig. l is a front elevation of the machine; Fig. 2 is a side elevation of the left-hand side of the machine; I Fig. 3is a detail of the means for adjusting the timing mechanism; n W i Fig. 4 is a side elevation, partly in section, of the right-hand side of the machine;

Fig. 5 is a side elevation, partly in section, of

, the base of the machine showing the controlling valves and the timing mechanism; 7

Fig. 6 is a sectional detail of one of the pressure control valves used in themachine;

Fig. 7 is a plan view, partly in section, taken through the base of the machine;

Fig. 8 is a side elevation of the head of the machine during the application of preliminary pressure, a portion of the pad box being shown in section; l l

Fig. 9 is a view of a portion of the pad and the cam-operating mechanism shown in Fig. 8 after the pad has been inflated to apply final pressure, the pad being shown partly in section; and

Fig. 10 is a rear view of the cam-operating parts shown in Figs. 8 and 9.

As indicated in Fig. 1, the machine may comprise two substantially identical pressure-applying mechanisms arranged side by side on the same frame, the same motor, oil pump and oil and water supply being common to the two machines. The machines may be utilized, of course, one for operating upon a right shoe and the other upon a left shoe and, since the machines are substan'- tially identical, only the one at the left will be described in detail and it will be understood that the other is substantially similar.

As illustrated in Fig. 4, the machine comprises a frame 20 to which is fixedly secured a forepart pad box 22. To the stationary forepart pad box 22 is pivoted at 24 a part 26 which constitutes the shank portion of the box and to the part 26 is pivoted at 28 a part 3!) which constitutes the heel end of the box. In the box comprising the sections 22, 25 and 30 is mounted first an inflatable pad 32 upon which lies a rubber pad 34 the forepart of which is considerably thicker than its shank and rear part. The pad is held in the box by usual plates 36 secured to the pad box and overhanging the pad. The rear part 36 of the pad box has on its under side a flat surface 56 which rests on a block 52 pivoted at 54 to a lever 56. The lever 56 is pivoted at 58 to the machine frame 20 at a point 1 under the forepart pad box 22-. A screw 66 threaded through a lug on the frame is arranged to engage a downward projection on the front end of the lever 56. Turning of the screw 60 by its hand wheel 62 will adjust the lever 56 about the center 58 and raise and lower the rear end 30 of the pad box, the pad of which is maintained substantially parallel to the lever 56 by a link 64 connecting the front end of the part 30 of the padbox with the lever 56. The link permits the lengthwise sliding of the surface 50 on the block 52 which is necessary as the sections 26, 30 move relatively to the lever 56 about the pivots 24, 28 in responseto movement of the lever 56. The pad box is similar in construction to that disclosed in United States Letters Patent 'No. 2,124,- 654, granted July 26, 1938, on my application, and maybe provided with a mask plate and means for automatically adjusting the mask plate in accordance with the length of the shoe, as disclosed in the above-mentioned patent. Such automatic means is indicated at 65 in Figs. 4 and 8.

To apply pressure to the shoe, a forepart abutment 66 for engaging the forepart of the shoe and a heel abutment 68 for engaging the cone of the last are provided, the abutments 66, 66 being mounted for lengthwise adjustment on a lever I pivoted at I2 to a lever I4 which is pivoted at I6 to the frame 20. The lever I0 is held with its toe abutment 66 normally depressed by a spring I8. The rear end of the lever I4 has pivoted thereto a block 80.which engages the edge of a cam 82 which is pivoted to the frame at 84, and connected between the rearend of the lever I4 and the frame is a tension spring 65 (Fig. which lifts the front end of the lever when released by the cam. The operating face of the cam 82 isso shaped that clockwise movement of the cam acting on the block 80 will swing the lever I4 counterclockwise about its pivot I6, thus moving the abutments 66, 68 against the shoe and applying'pressure thereto determined by the force which operates the cam.- After pressing the shoe into the pad the surface of the cam 82 cooperates with the block 86 to sup port the shoe against pressure from the pad, the part of the cam which at that time engages the block being nearly concentric with the pivot 84 of the cam. I

The cam is operated by a fluid pressure cylinder 86 the piston 88 of which is connected b a link 90 to a lever 92-pivoted to the cam 82 at 94 and having at its rear end a pin 96 to which theupper end of a strong spring 98 is connected, the lower end of the spring being connected at I00 to the frame. When fluid under pressure is applied to the cylinder 86 the link 96 pushes on the lever 9'1 between its ends. Since at that time there is little resistance to movement of the cam 62, it will be moved about its pivot 84and will operate the lever I4 about the pin I6 as a fulcrum to apply pressure to the shoe as described. However, when the resistance of the shoe reaches a predetermined amount, the spring 98 yields, allowing the lever 92 to turn on the pivot 94 and the rear end of the lever to go up. This movement is utilized to control the introduction of fluid pressure to the pad. A forked member I02 embraces at its upper end a roll on the pivot screw 84 of the cam 82 and has therein a slot I04 through which the pin 96 prois pivoted to an arm I66.

jects, the slot accommodating the movement of the pin 96 about the center 64. When the rear end of the lever 62 rises against the tension of the spring 96, the pin 96 will impart upward movement to the member I62 which, at its lower end, The arm I66 is fixed to a rockshaft I08 journaled in the frame and having (Figs. 4 and 5) an arm I I0 connected by a link I I2 to a valve I I4 by which admission of Water to the pad 32 is controlled.

The fluid pressure system of the machine is arranged as follows: A motor I26 (Fig. 2) mounted at the rear end of the base portion of the machine has a pulley I22 belted to a pulley I24 on a gear pump I 26. The pump I26 takes oil through a pipe I21 froma tank I28 (Fig. 7) at the base of the machine and forces it through a pipe I30 (Fig. 2) to a pressure control valve I32. The valve I 32 has the construction indicated in Fig. 6. The fluid under pressure entering from the pipe I36 presses against a piston I33 until the tension of a spring I34 is overcome, permitting the piston I33 to slide and open ports therein leading to a chamber I36 connected with a pipe I36. A more detailed description of this type of valve may be found in Letters Patent of the United States No. 2,047,185, granted July 14, 1936, upon application of M. H. Ballard et al. In the present arrangement, the pipe I38 leads from the pressure control valve I32 to another similar pressure control valve I 46 the overflow pipe I42 from which is connected to what is termed the low pressure system of the machine which operates the padinflating mechanism, while an extension I44 of the pipe I30 beyond the pressure control valve I32 is connected to the high pressure system which is utilized to operate the piston 86.

The pipe I44 leads to a port I46 in a valve casing I48 (Fig. 5). The port I46 is closed by the upper portion of a cylindrical slide valve I 50 which has its intermediate portion reduced in diameter to permit, in the position of the valves shown; communication between a port I 52 in the casing I48'and an exhaust port I54 communicating with the tank I28. The port I52 is connected by a pine I56 to the cylinder 86 and, of course, with the valve in the position shown the cylinder would be exhausted. When the valve I50 is lifted communication is established between the high pressure port I46 and the pipe I56, thereby supplying high pressure fluid to the piston 88 which operates in the manner already described to apply pressure to the shoe. The pipe I42 of the low pressure system is connected (Fig. 5) to a port l58 in the casing I46. The port I58 is normally closed by the cylindrical slide valve II4 having an intermediate reduced portion which permits communication between an exhaust port I62 and a pipe I 64 (Fig. '7) leading to a port I66 in a head I66 secured to a large horizontal cylinder I I6.

An oil piston I12 in the cylinder carries a hollow stem I'I4 which passes loosely through a partition I16 in the center of the cylinder and at its front end is connected to a water piston I18. The rear end of the cylinder I10 is closed by a head I to which are connected for communication with the cylinder a large pipe I62 and a small pipe I84. To move the pistons 112, I18 forwardly or toward the head I68 when the oil pressure is relieved, there is provided a long compression spring I86 the forward end of which engages the bottom of the hole of the hollow stem I14 and the other end of which engages the head I80, the spring being prevented from buckling by a rod I88 secured to the head I80 and extending lengthwise of the spring I 86 insidelthe coils thereof. The large pipe I82 (Fig. 2) 'leads directly from the cylinder head I80 to the hollow pad 32 where it is connectedto thepad, as shown in Fig. 4. The pipe I82 communicates'with an enlargement I90 of a cylindrical recess I92 in the lower part of the forepart pad box22. In the recess I92 is a hollow sleeve I94 having at its upper end a projecting flange I96, bearing against the lower wall of the hollow pad 32. The lower end of the sleeve I94is' closed and a screw I98 passes loosely through a holein; the. forepart pad box 22 and is threaded intothe closed end of the sleeve so that the'screw when rotated moves the sleeve" downwardly and causes its flange I96 to clamp the lower wall of the hollow pad 32 against the bottom of the pad box. Ports 200 permit passage of water from the enlargement I90 through the sleeve into the hollow pad 32. H

The small pipe I84 connected to the head I80 of the cylinder extends,-as shown in Fig. 4, through a check valve 202 and a stop cock 204 to a T 206 (Fig. 1) from which a pipe 208 leads to a reservoir 2 I the water level in which is kept at a uniform height by means of an inverted bottle 2I2 having its neck immersed in the water in the reservoir 2I0. This bottle 2 I2 may be of the construction disclosed in Letters Patent of the United States No. 2,013,853, granted September 10, 1935, in the name of E. J. Ray. The bottle 2I2 is surrounded by a casing 2I4 mounted for vertical adjustment on a bracket 2 I 6 by means of a thumb screw 2I8. From the T 206 another pipe 220 leads through the stop cock 204 and the check valve 202 to the cylinder I10 on the right-hand side of the machine. 1

A lasted shoe and sole having been placed upon the pad 34, the operation of the machine is initiated by depression of a treadle 222 (Fig. pivoted at 224 to the base of the machine and hav ing a long gooseneck portion 226 which extends from the treadle 222 up over the edge of the oil tank I28 and down beneath. the oil level to a point under the slide valve I50 to which it is connected by a link 228. The treadle is raised by a tension spring 230 connected at one end to the gooseneck 226 forward of its pivot224 and at the other end to a pin on the machine frame. Downward movement of thetreadle 222 is limited by t a stop screw 232 threaded through the treadle and engaging the base when the treadle is depressed. 7

Depression of the treadle 222 will move the slide valve I50 upwardly sufliciently, to close the connecting the high pressure system with the pipe I56 communicating with the cylinder 86. Movement of the piston 88 in response to such pressure first turns the cam 82 clockwise, its

" exhaust port I54 and open the port I46, thus contoured edge engaging the block 80 and turn:

ing the lever 14 counterclockwise (as viewed in Fig. 4) about its pivot to cause the abutments 66, 68 to apply pressure to the shoe, thereby pressing it firmly upon the pad and causing low pressure fluid to the port I66 (Fig. '1) in the 75 head I68 of the large cylinder I10. Pressure on the piston "I12 forces water in the rear end of the cylinder through the pipe I82 into the hollow pad' 32, passage of the water through the small pipe I84 being prevented by the check valve 202. When the-treadle 222 is allowed to return in response to its spring 230, the slide valve I50 is lowered, cutting off the supply of oil through the port I46 and opening the exhaust. port to allow oil in the cylinder I86 to be exhausted, Whereupon the spring 98 contracts, moving the forked member I02 downwardly, thus lowering the slide valve- H4 and causing its inlet port I 58 to be closed :and its exhaust port 162.130 be opened,

thus allowing thereaction of the spring I88 to movethepiston I12 forwardly and exhaust the oil from the front portion of the cylinder. At the same time the water piston I18 moves forwardly under the influence of the spring I86 and allows the water to flow out of the hollow pad In case of leakage, more water will be supplied-through the pipe I84 from the reservoir '2I0. The leakage of water by the piston I18 is carried by a'pipe 234 (Figs. 2 and '7) to a drip tank 236 located'in one corner of the machine base."- The pipe 234 is connected to the chamber between the partition-I16 and'the piston I18. Similarly, an opening 231 in the lower side of the cylinder I at the front of the partition I16 will permit any oil which passes the piston I12 to drain back into the oil tank I26 beneath it.

The amount of pressure in the low pressure system is indicated by a gage 238 connected to the pipe I42 and the amount of pressure in the high pressure system is indicated by a pressure gage 240 (Fig. 7) connected to the pipe I30, the pressure controlvalve I32, I being, of course,

'adjusted'by their hand wheels 242 to maintain the desired pressure respectively in the high and low pressure systems.

In order that the pressure on a given shoe may be retainedfor a predetermined time and then released, timing mechanism is provided which will now be described withparticular reference'to Figs. 3, 5 and '7. The upper portion of the slide valve I is provided with a horizontal notch 250 (Fig. 5) which, when the valve is fully raised, is engaged by a locking lever 252 which prevents descent of the valve when the treadle is released. Inasmuch as the valve is connected to the treadle by the link 228, the treadle will be held depressed until the lever 252 is disengaged from the valve and permits the latter to descend.- The lever 252 is biased by a spring 254 in a direction toengage the notch 250 and is pivoted on the upper end of an upright rod 256. A rearward projection 251 (Fig. 7) of the lever 252 beyond its pivot 256 is in position to be engaged by a pin 258 carried by a segment 260 secured to the upright rod 256. A tension spring 262 connected between the pin 258 and a stationary bracket 264 swings the segment 260 in a counterclockwise direction until a pin 266 thereon engages a downwardly projecting plate 268 on a horizontal bar 210 extending transversely of the machine.

The rod 256 slides vertically through a bearing 214 (Fig. 5) and-when the rod is depressed the segment rests on the top face of the bearing 214. The rod 256 is urged downwardly by gravity and by a leaf spring 216. On the lower end of the rod 256 is a sliding sleeve 218 having a slot 280 engaging a pin in the rod to limit movement of the sleeve. A compression spring is mountedon the rod between the upper end of the sleeve and a collar 282, and a rearward extension 284 of the treadle lever 226 lies under the lower end of the sleeve 278 so that upon depression of the treadle the rod 256 and the segment 260 will be yieldingly raised.

Mounted in bearings 286, 281 secured to pposite sides of the valve casing I48 is a hori zontal shaft 288, the shaft being located (Fig. just above and to the rear of the segment 26!] so that when the segment is raised its teeth will mesh with screw threads 290 on the shaft 288. Secured to the shaft 288 is a sprocket wheel 292 connected by a sprocket chain 294 to a sprocket wheel 295 on a to 1 reducing gear 298 having a pulley 363 driven by a belt 302 which leads to a pulley 394 (Fig. 2) on the shaft of the motor I29. Thus the shaft 288 is driven at aslow speed.

When the treadle is depressed to apply pressure to the shoe, the extension 284 of the treadle lever acting on the sliding sleeve 218 yiel'dingly raises the rod 256 (Fig. 5) and the segment 260 until the segment engages the lower side of the locking lever 252 which limits its upward movement to a position where its teeth are in mesh with the screw threads 29!] On the shaft 288. Since the shaft 288 is turning continuously, the segment at once starts to travel in a clockwise direction (Fig. '7) and, when the pin 258 engages the rearward projection 251 of the locking lever 252, it moves the lever out of the notch 259 in the slide valve I50, allowing the Valve to drop and exhaust the cylinder 86. Of course the time during which the shoe remains under pressure will depend upon the distance the pin 258 has to travel before it engages the projection 25'! of the locking lever. This may be varied by changing the location of the plate 268 engaged by the stop pin 266. This plate 268 and a similar one which controls the other side of the machine are secured to the under side of the bar 219 and may be adjusted to similar settings by longitudinal movement of the bar which, as shown in Fig. 3, extends beyond the machine frame and has thereon an index mark 306 which cooperates with a fixed scale 308 to indicate the setting of the bar, the divisions of the scale in the present instance indicating seconds. The bar may be held in adjusted position by a thumb screw 3!!! extending through a slot 3I2 in the bar 210 and threaded into a bracket 3M on the frame,

Having thus described my invention, What I claim as new and desire to secure by Letters Patent of the United States is:

l. A machine for applying pressure to shoe bottoms having, in combination, an inflatable pad to receive a shoe and sole, means for applying pressure to the shoe to seat it upon the pad, and means controlled by application of a predetermined amount of pressure to the shoe to cause the pad to be inflated.

2. A machine for applying pressure to shoe bottoms having, in combination, an inflatable pad to receive a shoe and sole, fluid-operated means for applying pressure to the shoe to seat it upon the pad, and means set in operation automatically by the building up of a predetermined amount of pressure in said fluid-operated means to cause the pad to be inflated.

3. A machine for applying pressure to shoe bottoms having, in combination, an inflatable pad, a lever having means to engage a shoe and press it upon the pad, a cam for operating the lever to apply pressure to the shoe, fluid-pressureoperated means for moving the cam, and means acting after a predetermined force has been applied to the cam for causing inflation of the pad.

4. A machine for applying pressure to shoe bottoms having, in combination, an inflatable pad, a lever arranged to press a shoe upon the pad, a cam for operating the lever to apply pressure to the shoe, fluid-pressure-operated means for moving the cam, a yieldable connection between the fluid-pressure-operated means and the cam, and means acting when said connection yields to cause inflation of the pad.

5. A machine for applying pressure to shoe bottoms having, in combination, an inflatable pad, a lever arranged to press a shoe upon the pad, a cam for operating the lever to apply pressure to the shoe, a lever pivoted to the cam, fluid-pressureoperated means connected to the last-mentioned lever, a spring connected to the lever on the cam and acting to oppose movement of the lever by said fluid-operated means, and means acting when said spring yields to cause inflation of the pad.

6. A machine for applying pressure to shoe bottoms having, in combination, a pad to receive a sole, means for pressing a shoe against the sole to seat the shoe and sole upon the pad, and means dependent upon the application of a predetermined pressure to the shoe to cause pressure to be applied to the pad to force the pad against the sole.

7. A machine for applying pressure to shoe bottoms having, in combination, a pad to receive a sole, means for pressing a shoe against the sole to seat the shoe and sole on the pad, said means being arranged to hold the shoe and sole against the pad after it has applied a predetermined pressure to the shoe, and means dependentupon the application of said predetermined pressure to the shoe for forcing the pad against the sole, said last-named means being arranged automatically to apply pressure to the pad as a conse quence of the operation of the predetermined pressure to the shoe.

8. A machine for applying pressure to shoe bottoms having, in combination, an inflatable pad, a lever arranged to press a shoe upon the pad, a cam for operating the lever to apply pressure to the shoe, a cam-operating lever having afulcrum arranged to yield when the resistance of the cam to further movement reaches a predetermined point, and means acting when the fulcrum yields to cause inflation of the pad.

9. A machine for applying pressure to shoe bottoms having, in combination, an inflatable pad, a lever arranged to press a shoe upon the pad, a cam for operating the lever to apply pressure to the shoe, means for operating the cam, said means including a member arranged to move in one direction to operate the cam and in a different direction when the resistance of the cam to further movement reaches a predetermined point, and mechanism responsive to the movement of the lever in said different direction for causing inflation of the pad.

10. A machine for applying pressure to shoe bottoms having, in combination, an inflatable pad to receive the sole of a shoe, means for supportinga lasted shoe and a sole on the pad, means for inflating the pad to apply pressure to the shoe and sole to cement-attach the sole and shoe, and means for automatically exhausting the pad after the shoe has been under pressure for a predetermined time.

11. A machine for applying pressure to shoe bottomshaving, in combination, an inflatable pad to receive a shoe sole, means for applying pressure to a lasted shoe and the sole on the pad, means for inflating the pad to press the shoe and sole together, and timing mechanism set in operation when pressure is applied and said pad is inflated to releasepressure ,on the shoe and exhaust thepad after a predetermined time'has elapsed. l

. 12. A machine for applying pressure to shoe bottoms having, in combination, an inflatable rubber pad, means for holding a shoe on the pad, a contractible water-containing vessel communicating with said pad, a source of oil under pressure, a vessel arranged to be expanded, by the oil under pressure, and connections for causing expansion of the oil vessel to contract the water vessel and force water into the pad.

13. A machine for applying pressure to shoe bottoms having, in combination, an inflatable pad, means for holding the shoe on the pad, and a cylinder having two heads and containing two pistons, one head communicating with the pad and the other head communicating with a source of liquid under pressure, the application of fluid pressure to one piston causing the other piston to force fluid into the pad.

14. A machine for applying pressure to shoe bottoms having, in combination, an inflatable pad, means for holding a shoe on the pad, a water-containing vessel the cubic content of which may be reduced by pressure, said vessel communicating with said pad, a vessel arranged to be expanded by oil under pressure, connections for causing the expansion of the oil vessel to reduce the cubic content of the water vessel and force water into the pad, and a source of oil under pressure communicating with said oil vessel.

15. A machine for applying pressure to shoe bottoms having, in combination, an inflatable pad, means for holding a shoe on the pad, a source of liquid under pressure, a cylinder having two heads and containing piston means between the heads, one head communicating with the pad and the other head communicating with the source of liquid under pressure, and means for controlling the application of the pressure liquid to cause a movement of said piston means [to force fluid into the pad.

16. A machine for applying pressure to shoe bottomshaving, in combination, an inflatable rubber pad, means for holding a shoe on the pad, a contractible water-containing chamber commum'cating with said pad, an expansible chamber containing oil, means for supplying oil under pressure to expand the oil chamber, and means for causing expansion of the oil chamber to contract the water chamber to force water into the pad.

17. A machine for applying pressure to shoe bottoms having, in combination, an inflatable pad, means for holding a shoe on the pad, a cylinder having a head at each end and containing a movable member therein, one head communicating with the pad and the other head communicating with a source of liquid under pressure, and means for supplying liquid under pressure through said head to move said movable member and force liquid through the head connected with said pad.

18. A machine for applying pressure to shoe bottoms having, in combination, an inflatable pad, means for holding a shoe on the pad, a water-containing vessel the cubic content of which may be reduced by pressure, said vessel communicating with said pad, a vessel arranged to be expanded by oil under pressure, connections for causing expansion of the oil vessel to reduce the cubic content of .thewater vessel and force water into the pad, a source of oil under pressure communicating with saidoil vessel, and a valve for controlling admission of oil to the oil vessel.

19. A machine for applying pressure to shoe bottoms having, in combination, an inflatable pad, means for holding a shoe on the pad, a cylinder closed at each end, two pistons spaced apart in said cylinder, one end of the cylinder communicating with the pad and the other end communicating with a source of liquid under pressure, and means for supplying liquid under pressure through said last-mentioned end to apply pressure to one of said pistons and cause the other piston to force liquid through the end connected with the pad into the pad.

20. A machine for applying pressure to shoe bottoms having, in combination, an inflatable pad, means for holding a shoe on the pad, a system containing a pressure medium which is not deleterious to the pad connected with the pad, a pressure fluid system, and means responsive to the pressure in the pressure fluid system for forcing the pressure medium from the first-mentioned system into the pad.

21. A machine for applying pressure to shoe bottoms having, in combination, an inflatable rubber pad, means for holding a shoe on the pad, a system containing water connecting with the pad, a piston for forcing water from the system into the pad, and a pressure fluid system arranged to apply pressure to the piston to displace the same and inflate the pad.

22. A machine for applying pressure to shoe bottoms having, in combination, an inflatable pad, means for holding a shoe on the pad, a contractible water-containing chamber communicating with the pad, means for contracting said chamber to=iorce water into the pad, a reservoir higherthan the pad and connected thereto, and means permitting flow of water from the reservoir into the pad when the water from the pad is not under pressure and for preventing the flow of water from the pad to the reservoir when the water in the chamber and pad is under pressure.

23. A machine for applying pressure to shoe bottoms having, in combination,'an inflatable rubber pad, means for holding a shoe on the pad, a contractible water-containing chamber communicating with the pad, means for contracting said chamber to force water into the pad; a reservoir higher than the pad, a pipe leading from the reservoir to the pad, and a check valve in the pipe permitting flow of water by gravity to the pad and chamber when the water therein is not under pressure and preventing flow of water to the reservoir when the water in the chamber and pad is under pressure.

24. A machine for applying pressure to shoe bottoms having, in combination, an inflatable pad, means for holding a shoe on the pad, a cylinder closed at each end, two pistons spaced apart in said cylinder, one end of the cylinder communicating with the pad and the other end communicating with a source of liquid under pressure, means for supplying liquid under pressure through said last-mentioned end to apply pressure to one of said pistons and cause the other piston to force liquid through the end connected with the pad into the pad, and means for separately disposing of the'leakage of water by one of the pistons and leakage of oil by'the other piston.

25. A machine for applying pressure to shoe bottoms having, in combination, an inflatable pad, means for holding a shoe on the pad, a cylinder closed at each end, two spaced pistons in the cylinder, a partition between the pistons, one end of the cylinder communicating with the pad and the other end communicating with a source of liquid under pressure, means for supplying -liquid under pressure through the lastmentioned end to move said pistons to force liquid through the end connected with the pad into the pad, a pipe opening between one of the pistons and the partition to dispose of leakage by said piston, and an opening between the other piston and the partition to dispose of leakage by the other piston.

'26. A machine for applying pressure to shoe bottoms having, in combination, a pad, fluidpressure-operated means for pressing the shoe upon the pad, a valve for controlling operation of the fluid-operated means, means for locking the valve in its pressure-applying position, and means acting after a predetermined time has elapsed for releasing the valve to release the pressure on the shoe.

27. A machine for applying pressure to shoe bottoms having, in combination, a pad, fluidoperated means for pressing a shoe upon the pad, a valve movable from an exhaust position to a position to supply fluid under pressure to said fluid-operated means, means for locking the valve in said pressure-applying position, a continuously rotating screw, a toothed segment arranged to be brought into engagement with said screw in conjunction with the opening of the valve, and means on said segment for releasing the valve-locking means after a predetermined time has elapsed.

28; A machine for applying pressure to shoe bottoms having, in combination, a pad, fluidoperated means for pressing a shoe upon the pad, a valve movable from exhaust position to a position to supply fluid under pressure to said fluid-operated means, means for biasing the valve to exhaust position, meansfor locking the valve in said pressure-applying position, a continuously rotating screw, a toothed segmentalranged to be brought into engagement with said screw in conjunction with the opening of the valve, and means on said segment for releasing thevalve-locking means after a predetermined time has elapsed to cause release of pressure on the shoe. 1

29. A machine for applying pressure to shoe bottoms having, in combination, an inflatable pad to receive a shoe and sole, fluid-operated means for applying pressure to the shoe to seat it upon the pad, means acting automatically to inflate the pad after a predetermined amount of pressure has been applied to theshoe, and means acting after the shoe has been under pressure for a predetermined time to release the pressure on the shoe and deflate the pad,

39. A machine for applying pressure to shoe bottoms having, in combination, an inflatable pad, fluid-pressure-operated means for pressing a shoe upon the pad, means actuated automati cally after a predetermined pressure has been applied to the shoe to inflate thepad, a valve for controlling operation of the fluid-operated means, means yieldingly holding the valve in exhaust position, means forlocking the valve in pressure-applying position, means acting after a predetermined time has elapsed for releasing the valve to relieve pressure on the shoe, and means actuated by relief of pressure on the shoe for exhausting the pad. i

31. A machine for applying pressure to shoe bottoms having, in combination, a pad, fluidoperated means for applying pressure to the shoe, a valve normally biased to exhaust position and movable from exhaust position to a position to supply fluid under pressure to said fluid-operated means, manually controlled means for moving the valve to pressure-applying position, means for locking the valve in said position, a continuously rotating screw, a toothed segment arranged to be brought into engagement with said screw when the manually controlled means is operated, and means on said segment for releasing the valve-locking means after a predetermined time has elapsed to cause pressure on the shoe to be relieved.

32. A machine for applying pressure to shoe bottoms having, in combination, a pad, fluidpressure-operated means for pressing a shoe upon the pad, a valve for controlling operation of the fluid-operated means, means for biasing the valve to exhaust position, means for locking the valve in position to operate said fluid-operated means, and means acting after a predetermined time has elapsed for releasing the valve to permit it to move to exhaust position and release pressure on the shoe.

33. A machine for applying pressure to shoe bottoms having, in combination, an inflatable pad to receive a shoe and sole, means for applying pressure to the shoe to seat it upon the pad, means acting automatically to inflate the pad after a predetermined amount of pressure has been applied to the shoe, and means acting after the shoe has been under pressure for a predetermined time to release the pressure on the shoe and deflate the pad.

34. A machine for applying pressure to shoe bottoms having, in combination, an inflatable pad to receive a shoe sole, means for supporting ,a lasted shoe and the sole on the pad, means for inflating the pad to apply pressure to the shoe to cement-attach the shoe and sole, and a timing mechanism set in operation when the pad is inflated and acting after a predetermined time to cause deflation of the pad. 7

35. A machine for applying pressure to shoe bottoms having, in combination, a pad, fluidpressure-operated means for pressing the shoe upon the pad, a valve for controlling operation of the fluid-operated means, means for biasing the valve to exhaust position, means for locking the valve in position to operate said fluid-operated means, and a timing mechanism set in operation by movement of said valve to locked position and acting after a predetermined time has elapsed for releasing the va1ve-locking means for permitting it to move to exhaust position and release pressure on the shoe.

36. A machine for applying pressure to shoe bottoms having, in combination, an inflatable pad to receive a sole, means for pressing a shoe against the sole to seat the shoe and sole upon the pad, a high pressure fluid-operated system for operating the shoe-pressing means, a low pressure fluid system for applying pressure to the pad, and means responsive to the pressure in the high pressure system for admitting pressure fluid in the low pressure system to the pad.

SIDNEY J.

. CERTIFICATE OF CORRECTION.

Patent No. 2,501,205. November 10, 19h2.

SIDNEY J. FINN it is hereby certified that error ap ears in the printed specification of the above numbered patent requiring correction as follows: Page 1, sec- 0nd column, lines hit, 1+5 and lfl, for "machines" read "mechanisms"; page 2, second column, lines 51 and 52, for "which is connected read "which spills back into the tank 128 The pipe 158 is connectedby a'pipe 114.5";

line 1.1.6, for "pine" read -pipe--; line 5b.,- for the reference numeral "114.2" read lb,5; page 5, second column, line 10, for "cylinder 186 read "cylinder 86-; line 15, for "188" read l86--;-1ine ELL, for "pipe" 111.2 read "pipe L5 (Fig. 1)-; page 1;, second column, line 15, claimT, for "operation" read app1ication--; and that the said Letters Pat- Q ent shomild be read with this correction therein that the same' may conform to the record of the case in the Patent Office.

Signed and sealed this 5th day of January, A. D. 1915.

Henry Van Arsdale,

(Sea1) Acting Commissioner of Patents. 

